Valve Actuators - Mod Devices

Question 1

What are valves that are used to automatically throttle flow are generally referred to as?

Answer 1

Control valves

Question 2

What is the actuation movement that moves a valve disk up and down?

Answer 2

Linear

Question 3

What is the actuation movement that turns a valve disc 90°?

Answer 3

Rotary

Question 4

What type of medium actuates a pneumatic valve?

Answer 4

Air

Question 5

What type of medium actuates a hydraulic valve?

Answer 5

Mineral oil

Question 6

If a pneumatic gas valve fails it will fail in the open position.

TRUE / FALSE

Answer 6

False

Question 7

If a hydraulic gas valve fails it will fail in the closed position.

TRUE / FALSE

Answer 7

True

Question 8

How many recommended pipe diameter lengths of straight pipe before and after the valve should be installed to lessen the chance of internal flow turbulence in the piping manifolds and control valve?

Answer 8

Four

Question 9

Referring to Figure 1, what type of control valve is depicted?

Answer 9

Hydraulic

Question 10

Referring to Figure 2, what type of control valve is depicted?

Answer 10

Mechanical

Question 11

Referring to Figure 3, what type of control valve is depicted?

Answer 11

Pneumatic